Crushing and pulverizing apparatus



(No Model.) A 2 Sheets-Sheet l. A.. E. GRIFFITHS.

GRUSHING AND PULVERIZING APPARATUS. 7 No. 288,940. Patented NO 20, 1883.

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(No Model.) 2 Sheets-Sheet 2.

A. E. GRIFFITHS. GRUSHING AND PULVERIZING APPARATUS.

Patented Nov. 20, 1883.

fly 2 1 Y [0 n I a 47/ P. -Ile W\.\ Q 4 J n fl 4 a L m m w W m f u w 41 NITED STATES AMOS E. GRIFFITHS, OF PHILADELPHIA, PENNSYLVANIA.

' CllUSHING AND PULVRIZING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 289,940, dated November20, 1883.

Application filed July 25,1853. (No model.)

To aZZ whom it may concern:

Be it known that I, Anos E. GRIFFITHS, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in pGrushing and Pulverizing Apparatus, of which the following is a specification.

My'invention -relates to certain improvements in the crushing and pulverizing ma chine for which Letters Patent of the United States No. 276,394 were granted to me on the 24th day of April, 1883, the objects of my present improvements beingto strengthen the machine, to provide for the ready renewal of parts subjected to wear, and to simplify the construction of minor parts of the machine, all as fully described hereinafter.

In the accompanying drawings, Figure 1, Sheet 1, is a side view of the improved crushing and pulverizing machine;- Fig. 2, Sheet 2, a longitudinal section of part of the same;

and Figs. 3, 4, and 5, transverse sections on the lines 1 2, 3 4, and 5 6, respectively, Fig. 2.

A A are the opposite side plates of the mill frame or casing, and B B the end plates, the casing being properly secured together by transverse bolts a at each end, as shown in Fig. 2, and being bolted to a suitable base or foundation, WV. Each of the side plates of the mill has an extension, A, and these extensions carry the boxes 2), in which are the bearings for the crank-shaft D, whereby the cylinder )3 of the machine is vibrated, an arm, (I, which projects from said cylinder, being connected by a rod, [1, to the crank-shaft, as in my former patent. By forming the bearings for the crankshaft D in extensions of the side plates A, however, instead of in an independent structure, as before, a more effective resistance is offered to the strains exerted upon the cylinder and shaft, and the whole machine is strengthened and rendered more compact. The 1 cylinder F fits snugly between the side plates, A, is carried by the shaft I, described hereinafter, and is contained between the opposite concaves, G G, whichare likewise fitted to the plates A, and each of which has an 'upwardly-proj ecting inclined jaw, Gr, these jaws, with the plates A, forming the hopper H, in which is contained the jaw F of the cylinder F. The cylinder, concaves, and jaws have shoes of the jaws G are independent of those of the coucaves G, so that either shoe maybe removed when worn and a new one inserted in its place without disturbing the others. The shoes of the jaws F and G have their faces corrugated, as shown in Fig. 2, in order to insure a firm hold or downward pressure of the same upon the material subjected to their action, for, owing to the inclination of both jaws, there might, in the absence of the corrugations, be a tendency to elevate the material inthe hopper on the approach of the jaws, and a consequent interference with the proper crushing action of said jaws.

In the patented machine the shaft I of the cylinder F was cast with said cylinder; but in the present machine it is made separate therefrom, in order to permit the renewal of one part independently of the other, the retention of the shaft in its proper lateral position in respect to the cylinder being effected by means of the arm (1, which is fitted to a recess in the cylinder, and has a tenon, i, adapted to a mortise in the shaft, as shown in Figs. 2 and 5. The opposite journals of the shaft I are adapted to boxes g on the side plates, A, bolts f passing through end caps, 71/, on the boxes and entering threaded openings in the journals, which can have a slight lateral play in the boxes, so that by properly manipulating the bolts f the cylinder Finay be laterally adjusted in order to prevent it from bearing with greater force against one side plate than against the other. Particles of the pulverized material may find their way through the shaft-openings in the side plates, and in-order to prevent these particles from gaining access to and injuring the bearings of the journals in the boxes a recess, j, is formed in each of said boxes, this recess communicating with a lower opening, j, which affords an avenue for the escape of such particles. The concaves G haveinclined rear edges, the concaves being, in fact, wedgeshaped, and between said concaves and the end plates, B, of the frame intervene wedge-blocks J, which serve to resist the thrust exerted upon the concaves. By the adj ustmeut of the blocks J the concaves may be forced inward toward the cylinder, or may be permitted to move outward away from the cylinder, as it is de shoes 0, of hardened iron or steel; but the 2 H 258mm sired to regulate the space between the cylin1- der andconcaves. The adjustment of the wedge-blocks J is effected by means of screwbolts m, which are confined vertically to crossbars K of the frame by means of nuts or, and are adapted to nuts 1), carried by the blocks J, said blocks having openings 8 formed in them for the reception of the screw-bolts, and the nuts being secured in position, preferably by inserting them into the molds in which the blocks are cast. By the use of the nuts 1) the necessity of threading the openings 3 is rendered unnecessary, and expense in the manufacture of the blocks J is avoided. The concaves G have opposite ribs, 25, adapted to grooves in the side plates, A, and additional support for the concaves is afforded by bars w, secured .to the foundation NV, and adapted to serve as rails for rollers on the concaves.

In order to provide for the retraction and advancement of the concaves, recesses 1 are made in the opposite sides of the same, and slots 3/ in the side plates, A, so that a crow-bar or other implement may be inserted and used as a lever to force the concaves backward or forward. Beneath the cylinder and concaves is j that the latter can be readily I claim as my inveution-' 1. The combination of the frame of the machine, the cylinder F and its shaft I, and the boxes 9, forming bearings for the journals of the shaft, and having their lower portions cast with the side plates of the frame, having recesses j and openings j therein, as set forth.

2; The combination of the cylinder F, the shaft I, passing through the same, and the arm (I, adapted to a recess in the cylinder, and having a tenon, "5, adapted to a mortise in the shaft, as set forth.

3. The combination of the frame A, the cylinder F and its shaft I, the boxes 9, in which the shaft I can have a slight lateral play, the

cap-plates h, and the bolts f, bearing against the plates h, and screwed into the ends of the shaft I, as set forth.

4. The combination of the concaves G, having recesses y, with the side plates having slots 11/, as set forth.

5. The combination of the frame A, its cylinder F and concaves G, the screen-frame I,

supported on rollers beneath the cylinder F, the driving-shaft D, the crank-shaft S, belts and pulleys connecting said shafts, and rods connecting a crank on the shaft D with the cylinder, and a crank on the shaft S with thev screen, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AMOS E. GRIFFITHS.

Vitnesses:

HARRY DRURY, HARRY SMITH. 

